Therapeutic monitoring is done for all of the following except: (LQ)
a. Metformin is a biguanide and is the drug of choice for obese diabetic patients. The drug has anorectic properties and is therefore used for this purpose.
b. The drug has wide therapeutic index and that’s why it does not need therapeutic monitoring. Most common side effect of metformin is dyspepsia and it does not produce any hypoglyecemia.